The X825 expansion board provides a complete storage solution for the newest Raspberry Pi 4 Model B, it supports up to 4TB 2.5-inch SATA hard disk drives (HDD) / solid-state drive (SSD). Only 2.5 inch SATA interface HDD/SDD hard disk is suitable for X825 Board.

Cytron has tested this expansion board with:

• MakerDisk 120GB SATA III SSD with RPi OS
• Phidisk PhantomKnight 120GB 2.5" SATA III SSD

The Raspberry Pi 4B is configured to boot over the USB port and manage to get amazing data access speed through this board. Check out short clip on how you can install the expansion board to your RPi4B:

However, Geekworm does not recommend using Samsung SSD because they found the EMC of Samsung SSD is quite high and might affect the operation.

Notes

• A microSD card is required for forcing the Raspberry Pi 4B board to boot from USB as its "root" partition
• WARNING: DO NOT power your Raspberry Pi via the Pi's 40-pin header and type-C socket at the same time.
• USB 3.0 devices might generate radio frequency interference that can cause Wi-Fi and other wireless devices operating in the 2.4GHz band to have issues communicating with your Raspberry Pi 4B. To avoid interference on the 2.4GHz band using Wi-Fi, try using the 5GHz band instead. If the problem still exists, please turn off WiFi and use the wired network instead.

Features and specifications

• Supports up to 4TB 2.5-inch SATA hard disk drives (HDD) / solid-state drive (SSD) (Theoretically it can work with 6TB or 8TB as well. But actually we do not test the X825 board with 6TB or 8TB HDD, you can have a try)
• Ideal storage solution for Raspberry Pi 4 Model B
• UASP supported for Raspberry Pi 4, NOT support TRIM
• Use a shorter USB 3 connector to reduce the overall height
• Powers the Raspberry Pi via Pi's 40-pin header
• The Red LED indicator indicates powered status and the blue LED indicator indicates drive status
• USB 3.1 Gen1 to SATA 6Gb/s Bridge Controller
• Use new 4pcs test pins to power each other with raspberry pi 4, no additional wire required
• Quick file transfer with high-speed USB 3.1 connectivity from a PC or a Mac
• Powers the Raspberry Pi - no additional power supply for RPi 4
• Power Supply through the DC Barrel:
  • Power supply: AC 100 - 240V input 50 / 60Hz, 5V DC 4A output
  • DC Power Plug Size: 5.5*2.5mm

Note: The Raspberry Pi 4B board, DC power adapter, and the 2.5" SATA SSD and power supply are NOT INCLUDED in the packing list.

Check out how to power the expansion board:

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Packing list

• 1 x X825 V1.5 expansion board
• 1 x USB 3.1 connector
• 1 x mounting screws pack

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Links

• Product description, GeekWorm Wiki

• Geekworm X825-C8 metal case wiki page

• Geekworm X825 V2.0 product page